Assessment of phagocytic and antimicrobial activity of human granulocytes |
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| Authors: | Schmid L Brune K |
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| Affiliation: | Department of Pharmacology, Biozentrum der Universität Basel, 4056 Basel, Switzerland |
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| Abstract: | A microassay for assessing two functions of polymorphonuclear leukocytes in the presence or absence of complement is presented. Requiring only minute amounts of blood (0.1 ml) and a minimum of laboratory equipment (microscope, incubator, and centrifuge), it allows the quantitation of phagocytosis and intracellular killing of microorganisms by leukocytes. To demonstrate the value of this assay, the phagocytic and microbicidal activity of leukocytes from healthy subjects and patients against Candida albicans was investigated. Apart from individual cases, no differences in the phagocytic activity between groups of healthy subjects and patients with candida vaginitis or different types of cancer could be found. However, the killing capacity of the leukocytes from women with recurrent candida vaginitis was reduced. The leukocytes of one patient showing a very low killing capacity lacked myeloperoxidase. Also, low values of killing were seen with leukocytes from three patients suffering from osteosarcoma, chronic lymphatic leukemia, or Hodgkins disease. |
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